Ditto on seeing this issue, and being VERY frustrated by it. Buggy software is not how I want to waste time.
The flickering clip has is ProRes 422(LT) with Shadow/Highlight filters on it. It was originally an H264 clip from DSLR, but I ran TimeWarp on it and exported it out of After Effects. In Premiere, it has the S/H filters and Fade to White transitions on both sides of it and is flickering.
Not cool at all, Adobe. At least a partial refund for my CC this month would be fitting for this issue (assuming it doesn't persist another few years without a fix, in which case its worth switching platforms completely!!).